Frieder Berr

9.8k total citations · 2 hit papers
126 papers, 6.3k citations indexed

About

Frieder Berr is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Frieder Berr has authored 126 papers receiving a total of 6.3k indexed citations (citations by other indexed papers that have themselves been cited), including 73 papers in Surgery, 54 papers in Pulmonary and Respiratory Medicine and 36 papers in Oncology. Recurrent topics in Frieder Berr's work include Cholangiocarcinoma and Gallbladder Cancer Studies (35 papers), Gallbladder and Bile Duct Disorders (27 papers) and Pediatric Hepatobiliary Diseases and Treatments (18 papers). Frieder Berr is often cited by papers focused on Cholangiocarcinoma and Gallbladder Cancer Studies (35 papers), Gallbladder and Bile Duct Disorders (27 papers) and Pediatric Hepatobiliary Diseases and Treatments (18 papers). Frieder Berr collaborates with scholars based in Germany, Austria and United States. Frieder Berr's co-authors include Tobias Kiesslich, Karel Caca, Joachim Mössner, Kristjan Plaetzer, Juergen Berlanda, Barbara Krammer, G. Paumgartner, Florian Kern, Andrea Tannapfel and Marcus Wiedmann and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Clinical Investigation and SHILAP Revista de lepidopterología.

In The Last Decade

Frieder Berr

123 papers receiving 6.0k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Photophysics and photochemistry of photodynamic therapy: fundamental aspects

2008 700 citations Kristjan Plaetzer, Barbara Krammer et al. profile →
Diagnosis and phenotypic classification of Wilson disease¹

2003 631 citations Péter Ferenci, Karel Caca et al. Liver International profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Frieder Berr Germany	42	2.6k	2.4k	1.5k	1.1k	987	126	6.3k
Joachim Mössner Germany	49	1.6k 0.6×	4.4k 1.8×	2.7k 1.8×	541 0.5×	1.9k 2.0×	319	8.4k
Kent J. Johnson United States	46	1.7k 0.7×	789 0.3×	537 0.4×	264 0.2×	619 0.6×	135	5.8k
Deng‐Chyang Wu Taiwan	45	2.2k 0.9×	3.8k 1.6×	1.6k 1.1×	389 0.4×	708 0.7×	312	8.3k
Michal Heger Netherlands	38	1.1k 0.4×	1.6k 0.7×	599 0.4×	111 0.1×	1.1k 1.1×	157	5.3k
Frédéric Batteux France	53	986 0.4×	580 0.2×	1.1k 0.7×	234 0.2×	898 0.9×	248	10.0k
Xiao Xu China	48	918 0.4×	1.6k 0.6×	1.7k 1.2×	127 0.1×	1.4k 1.5×	354	8.5k
Peter Olinga Netherlands	41	361 0.1×	1.3k 0.5×	1.0k 0.7×	166 0.2×	1.5k 1.5×	175	5.4k
Ian D. McGilvray Canada	50	670 0.3×	3.2k 1.3×	1.1k 0.8×	141 0.1×	3.1k 3.2×	188	9.6k
Nanno H. Mulder Netherlands	43	935 0.4×	1.4k 0.6×	3.4k 2.3×	270 0.2×	527 0.5×	229	6.9k
Massimiliano Berretta Italy	39	1.3k 0.5×	970 0.4×	2.5k 1.7×	76 0.1×	986 1.0×	322	6.1k

Countries citing papers authored by Frieder Berr

Since Specialization

Citations

This map shows the geographic impact of Frieder Berr's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Frieder Berr with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Frieder Berr more than expected).

Fields of papers citing papers by Frieder Berr

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Frieder Berr. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Frieder Berr. The network helps show where Frieder Berr may publish in the future.

Co-authorship network of co-authors of Frieder Berr

This figure shows the co-authorship network connecting the top 25 collaborators of Frieder Berr. A scholar is included among the top collaborators of Frieder Berr based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Frieder Berr. Frieder Berr is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Berr, Frieder, et al.. (2023). Feasibility of Continuous Monitoring of Endoscopy Performance and Adverse Events: A Single-Center Experience. Cancers. 15(3). 725–725. 1 indexed citations

Salmhofer, Hermann, Michael D. Franzen, Wolfgang Hitzl, et al.. (2013). Multi-Modal Treatment Of Calciphylaxis With Sodium-Thiosulfate, Cinacalcet And Sevelamer Including Long-Term Data. Kidney & Blood Pressure Research. 37(4-5). 346–359. 29 indexed citations

Kemmerling, Ralf, Beate Alinger, Otto Dietze, et al.. (2012). Association of stem cell marker expression pattern and survival in human biliary tract cancer. International Journal of Oncology. 41(2). 511–522. 13 indexed citations

Berr, Frieder, Thierry Ponchon, Daniel Neureiter, et al.. (2011). EXPERIMENTAL ENDOSCOPIC SUBMUCOSAL DISSECTION TRAINING IN A PORCINE MODEL: LEARNING EXPERIENCE OF SKILLED WESTERN ENDOSCOPISTS. Digestive Endoscopy. 23(4). 281–289. 71 indexed citations

Wipfler, Peter, Georg Pilz, Stefan Golaszewski, et al.. (2009). Invasive aspergillosis presenting with a painless complete ophthalmoplegia. Clinical Neurology and Neurosurgery. 112(1). 85–87. 10 indexed citations

Kiesslich, Tobias, Gernot W. Wolkersdörfer, Daniel Neureiter, Hermann Salmhofer, & Frieder Berr. (2008). Photodynamic therapy for non-resectable perihilar cholangiocarcinoma. Photochemical & Photobiological Sciences. 8(1). 23–30. 27 indexed citations

Kiesslich, Tobias, Juergen Berlanda, Kristjan Plaetzer, Barbara Krammer, & Frieder Berr. (2007). Comparative characterization of the efficiency and cellular pharmacokinetics of Foscan®- and Foslip®-based photodynamic treatment in human biliary tract cancer cell lines. Photochemical & Photobiological Sciences. 6(6). 619–627. 83 indexed citations

Schiefke, Ingolf, Melanie Maier, U. Oesen, et al.. (2004). Sequential combination therapy of HBe antigen‐negative/virus‐DNA‐positive chronic hepatitis B with famciclovir or lamivudine and interferon‐alpha‐2a. Liver International. 24(2). 98–104. 12 indexed citations

Ferenci, Péter, Karel Caca, Georgios Loudianos, et al.. (2003). Diagnosis and phenotypic classification of Wilson disease¹. Liver International. 23(3). 139–142. 631 indexed citations breakdown →

10.

Siekmeyer, Werner, et al.. (2002). Treatment of transient posttraumatic bile-duct stenosis by laparoscopic-assisted cholecystotomy. Pediatric Surgery International. 18(5-6). 503–504. 1 indexed citations

11.

Hermann, W., Karel Caca, Thomas Villmann, et al.. (2002). Genotype Correlation with Fine Motor Symptoms in Patients with Wilson’s Disease. European Neurology. 48(2). 97–101. 9 indexed citations

12.

Oertel, Michael, et al.. (2001). ALLOREACTIVITY OF NATURAL KILLER CELLS IN ALLOGENEIC LIVER TRANSPLANTATION1,2. Transplantation. 72(1). 116–122. 31 indexed citations

13.

Caca, Karel, Péter Ferenci, Hans-Jürgen Kühn, et al.. (2001). High prevalence of the H1069Q mutation in East German patients with Wilson disease: rapid detection of mutations by limited sequencing and phenotype–genotype analysis. Journal of Hepatology. 35(5). 575–581. 129 indexed citations

14.

Wiedmann, Marcus, Uwe G. Liebert, U. Oesen, et al.. (2000). Decreased immunogenicity of recombinant hepatitis B vaccine in chronic hepatitis C. Hepatology. 31(1). 230–234. 131 indexed citations

15.

Wells, James E., et al.. (2000). Isolation and characterization of cholic acid 7α-dehydroxylating fecal bacteria from cholesterol gallstone patients. Journal of Hepatology. 32(1). 4–10. 78 indexed citations

16.

Kohlhaw, K., et al.. (1999). APOPTOSIS AND THE EXPRESSION OF FAS AND FAS LIGAND (FasL) ANTIGEN IN REJECTION AND REINFECTION IN LIVER ALLOGRAFT SPECIMENS. Transplantation. 67(7). 1079–1083. 45 indexed citations

17.

Sackmann, Michael, Christoph von Ritter, J Pauletzki, et al.. (1994). Gallstone recurrence after shock-wave therapy. Gastroenterology. 106(1). 225–230. 54 indexed citations

18.

Berr, Frieder, Edgar Schreiber, & Ulrich Frick. (1992). Interrelationships of Bile Acid and Phospholipid Fatty Acid Species With Cholesterol Saturation of Duodenal Bile in Health and Gallstone Disease. Hepatology. 16(1). 71–81. 40 indexed citations

19.

Fischer, Sven, Frieder Berr, & G. Paumgartner. (1991). Unchanged Levels of Keto Bile Acids in Bile after Cholecystectomy. Digestion. 48(4). 202–209. 7 indexed citations

20.

Berr, Frieder, Frans Stellaard, Alwin E. Goetz, C. Hammer, & G. Paumgartner. (1988). Ethinylestradiol stimulates a biliary cholesterol-phospholipid cosecretion mechanism in the hamster. Hepatology. 8(3). 619–624. 23 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact